The narrative unfolds with a clash between two rival heroes, ZET and ALPHAS, delving into their origins - Jin Kanzaki, a youth with the power to transform into the superhuman ZET, and Kouga Amagi, a justice-driven young man who combat as ALPHAS using technology. As their paths intersect, along with those of others, they unite in the battle to safeguard humanity and eradicate the monstrous Players. Ironically, these abominations are creations of the Amagi Corporation, established by Kouga's grandfather, Mitsugai Amagi, adding a complex layer to their intertwined destinies.